Graphing Lines in Slope-Intercept Form (y = mx + b)

[@yeahright6226]

Short & Informative

[@JoeDebunks]

Messed up the last question, redid it and got the right answer!

[@aminmkyt4191]

Hey just wanted to congratulate you for getting 2k subs in 6 hours, wish you a pewdiepie shout out

[@ram9881]

I have a question, why is the slope in the first one 2, we have the points (-6, -3) and (0, 9), I calculated the slope which is 9-(-3)/0-6 which gives 12/-6 which is -2. I can't figure it out if I did something wrong or if the exercise is wrong.

[@mitchellhines1514]

You should be subtracting 0-(-6), resulting in a positive 6 in the denominator of your calculation.

[@ram9881]

@@mitchellhines1514 Thank you.

[@wafualex7930]

I'm getting 1 😅 what's wrong now

[@wafualex7930]

got it thanks

[@GoumenPouSawKwè2008]

Isn't the y-intercept also considered (alternatively) as the actual point where the line intersects the y-axis (in this case, not just the y-coordinate) and can this be expressed as an ordered pair (0, y)? Thanks for your videos. Respect.

[@ProfessorDaveExplains]

yes of course!

[@GodbornNoven]

You can also use a system of equations to solve for the slope and the y intercept if you have two points that constitute a line. say you have the points (2;-1) and (0;3) This gives us: -1=2m+b 3=0m+b Here by doing this is kinda like assuming these two have the same equation, which is how you can calculate the equation of a line by just having the position of two of its points.

[@thegoodlydragon7452]

Sorry to bother you Dave, I'll bet you're pretty busy now. But would you mind explaining briefly when you changed 5 into 15/3 in the example? How does that help? How do I know what fraction to change the y term into in any given equation?

[@Welcometotheslam5424]

@2310sammy I see... So if you turn 4 into 12/3, then you can do the same thing?

[@science-y9209]

He multiplied both numerator and denominator by 3

[@thegoodlydragon7452]

@@science-y9209 Thanks.

[@science-y9209]

@@thegoodlydragon7452 don't thank..this is what I was supposed to do.. I was supposed to help and that's what I did..

[@memebaltan]

@@science-y9209 "i too am very humble"

[@gabrieldambrosia6740]

THANK YOU I FINALLY UNDERSTAND

[@vinukmethsha7605]

thank you very much for the maths series you are a god to me

[@momreads4707]

Thank you! This was amazing.

[@aselim20.]

I took notes.

[@tGoldenPhoenix]

Thank you

[@antonioalmaraz5234]

When is your next video? It is these types of videos that remind me that the internet isn't all that cruel and not everybody stabs you in the back while reciting the whole declaration of independence.

[@ProfessorDaveExplains]

i post one every day, my friend! subscribe to the channel so you don't miss anything! speaking of the declaration of independence, i have american history tutorials too!

[@antonioalmaraz5234]

thanks duud you rock mane

[@Stoirelius]

WTF... was that cocaine or what?

[@joaquinc1303]

Why do you subtract 9/3 and -4/3?

[@nacure360]

Because you need to solve for b.

[@twrxzq]

how do we figure out which one is point 1 and point 2? coz it gives different solutions😢 i got the #1 right but for #2 i got y=-2x+3 since i used 7-5 / -2-(1) = -2 as my slope and not 5-7 / 1-(-2) = -2/3😢

[@julianjhulzbayubay1637]

Your solution is correct but to answer: -2-1 is not 3 it's -3

[@Buddying_youtuber786]

Fun to plot graphs

[@markreyronolo1482]

In checking comprehension, the first one. Isn't it y = -x + 9? Because 9-3/0-6 = 6/-6 = -1?

[@ergikeputa6163]

No because its 9-(-3) so its 12/6=2

[@MiltosPol-qn3zh]

When are you going to start geometry???

[@ProfessorDaveExplains]

so soon!

[@MiltosPol-qn3zh]

Professor Dave Explains Yes.....

[@JoeDebunks]

Funny how this was posted 6 videos before geometry!

[@th3qsfr]

While me who still doesn't understand anything because I suck at math.

[@tahersolanki4499]

How (4,-7) have slope -1/2

[@carultch]

(4, -7) on its own, has no slope. It is just a point. Individual points have no slope, but you can have a slope between two points, or between a point and an implied point of the origin. You can form an equation of a line out of the point (4, -7) and the slope -1/2, but it is a completely arbitrary choice to combine this point and this slope for an example. There is no particular reason why that point and that slope were chosen.

[@ClumpypooCP]

LET'S GRAPH SOME LINES!!!!!!!!!!

[@ProfessorDaveExplains]

YEAH BUDDY!!!!!

[@Its_TRISHA-22]

Can somebody please give me more practice problems

[@Stoirelius]

Just draw some lines in your coordinate plane that passes at least through 2 points precisely. Any line will do.

[@muhammedswalih4285]

Ask chatgpt to show more question like these

[@lizzlefizzleforizzle]

Hold up wait a minute. At the beginning (-2,3) and (1,5) points… I understand 5-3=2. But how is 1 -(-2)= to 3? Shouldn’t it be -1? This confuses the heck out of me because sometimes in math, it turns to a positive ie. -(-2) other times it will stay as a negative. Can someone please explain what and where the difference is?

[@carultch]

A negative times a negative equals a positive. Multiplying by a negative turns the number around by a half turn. Starting with a number that is already negative, multiplying by another negative turns it by a half turn, to the positive axis. This means that 1 minus negative 2 is the same thing as 1+2, which is 3. Negative times negative = positive: Turn around, turn around again. You're facing your original direction. Positive times positive = positive: Stay put, then stay put again. You're facing your original direction. Now the real challenge. What could the square root of a negative number be, which would be a quarter turn in this application? There is an answer, coined in the 1400's, and it is a fascinating milestone in the history of mathematics.

[@haksimka]

Omg, i am not undersatanding😢😢😢😢

[@tomas0603]

Still not understanding?

[@Carrymejane]

How about now? There is many great resources in the internet, i hope u found one

[@BebeIsGoated]

Dumbass

[@perlahernandez3906]

Same☹️

[@lyricred5791]

Me either !

[@chourouk-gr9qg]

ye

[@StacksWilson]

anyone else having to watch this for school?

[@abdikarinyusuf485]

Daved can you speak slowly when you make expanig math graphbg ir slop than

[@SsempijjaNawufaruh]

Comprehension is wrong When I used (-6,-3) I got y=2x-15 When I used (0,9) I got y=2x+9 Whyyyyyy😢😭😭

[@AfafAl-Meslmani]

i will never understand math. it needs to go to a therapist to solve its own problems i already have problems to solve.😩

[@kbikiro9728]

just Imagine you're playing a video game moving right mean x = +1 , move left x = -1 move up y = +1 move down y = -1

[@madhurikumari8937]

17/3? I got 6 meaning 18/3

[@abhayprajapati2485]

No comments

[@sajayouussef]

I can't understand anything 😭😭😭😭😭

[@balaramsharma4966]

Go to the stationery and buy graph and geometry box and plot various points , join them , measure them. One day you will say wow this is so easy .

[@afifarahman4733]

YOUR GOING TO FAST